Update language in system/timezone to comply with Android’s inclusive language guidance am: fdc5399eb1 am: 6ac9af6f5a am: f4f075df71 am: 03594ae287

Original change: https://android-review.googlesource.com/c/platform/system/timezone/+/1372805

Change-Id: Ib16cd0b533876b8efd343471c04fde499fc941dd